Improvement in shears



UNITED STATES FATENT OFFICE.

ROCHUS HEINISOH, OF NEWARK, NEW JERSEY.

|MPP.OVEMENT IN SHEARS.

Specification forming part of Letters Patent No. 37,689, dated February 17, 1963.

T0 a/ whom, t may concer-n:

Be it known that I, RooHUs HErNIsoH, of t'e city of Newark,eounty of Essex, and State of New Jersey, have invented certain new anduseful Improvements in Shears or Scissors for the Use of Tailors and others 5 and I do hereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, and the letters of reference marked thereon.

Figure I shows the inside of the upper halt of the shears. Fig. Il shows the shears complete, with theblade closed; and Fig. III shows them open. as preparatory for cutting.

The nature ot' my invention consists in torm-` ing the upper blade of shears or scissors in such a manner that when opened without in: convenient extension the whole length ot" the edges can be at all times employed for cutting. I can bestdescribe the shape in which lforin this blade by supposing the back part of the shank-plate and the point of the blade secured in a vertical position. Then drive or bend the blade and shank upward from a point at the base of the blade, so as to cause the blade and the shank to form an obtuse angle with each other, the lower edge of the shank-plate being left sufficiently depressed to receive the clamp-rivet, so that it may be near to or upon the line of the cutting-edge, as shown in Fig. I. I also employ one or more thin blocks or wedges upon the upper or lower side ot' the holding-shank of the clamp-screw, and I elongate the slot therefor, as shown at c, Fig. I. As the cutting-edges are ground away I change a wedge from the lower -to the upper side of the shank, which serves to keep the cutting-edges in proper vertical contact for use and wear.

I claiinl. Shears, the upper blade of which is formed out ot'l line with the shank, as described, being so bent that the cutting-edge shall f'all nearly or quite in line with the rivet or clamp screw and cross the shank in a diagonal line in its direction, and so that when the shears are closed the back of the upper blade shall present a hipflike elevation coincident with such recession of the blade, all as shown and described.

2. In combination therewith the extensionwedges, as shown and described. l

' R. HEINISGH. WVitnesses:

WM. HrNNEs, ALBERT HEINIsoH. 

